Re: [PATCH] usb: host: Use helper function to get endpoint

[Khalid Masum]

On Thu, Aug 25, 2022 at 1:24 AM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> udev is not a usb_device structure; it is a _pointer_ to a usb_device
> structure.  The pointer is created when ehset_single_step_set_feature()
> calls usb_hub_find_child(), but the structure itself gets created long
> before that, when the USB device is first detected and initialized.
>
> You can see this happening where hub_port_connect() calls
> usb_alloc_dev().  The ep0 field is filled in by hub_port_init() and the
> routines it calls.
>
Thanks for clarifying this. That helps a lot.

-- Khalid Masum